公开(公告)号：EP3204730A1

公开(公告)日：2017-08-16

申请号：EP15745333.3

申请日：2015-07-21

Applicant: Raytheon Company

Inventor： FEST, Eric C. ,  KING, Page E. ,  FORSYTH, Justan

IPC: G01D5/34

CPC classification number: G01D5/30 ,  G01D5/341 ,  H04N5/33

Abstract: Optical position encoding mechanisms and methods for use in reimaged optical imaging systems. In one example, a reimaged optical imaging system includes an imaging detector, an optical component, and at least one light source coupled to the optical component and configured to be reimaged onto the imaging detector, wherein a position of an image of the at least one light source at the imaging detector encodes a position of the optical component relative to the imaging detector.

Abstract translation: 用于再成像光学成像系统的光学位置编码机制和方法。 在一个示例中，重新成像的光学成像系统包括成像检测器，光学部件以及耦合到光学部件并被配置为再成像到成像检测器上的至少一个光源，其中至少一个 成像检测器处的​​光源对光学部件相对于成像检测器的位置进行编码。

公开(公告)号：EP3204730B1

公开(公告)日：2019-06-12

申请号：EP15745333.3

申请日：2015-07-21

Applicant: Raytheon Company

Inventor： FEST, Eric C. ,  KING, Page E. ,  FORSYTH, Justan

IPC: G01D5/30 ,  G01D5/34 ,  H04N5/33

公开(公告)号：EP3371548A1

公开(公告)日：2018-09-12

申请号：EP16785662.4

申请日：2016-10-13

Applicant: Raytheon Company

Inventor： FEST, Eric C.

IPC: G01B11/24 ,  G01J4/04

CPC classification number: G06T17/00 ,  G01B11/24 ,  G01J4/04 ,  G06T7/60 ,  G06T7/70 ,  G06T15/20 ,  G06T15/50 ,  G06T2200/04

Abstract: A system and method for more accurately generating the surface normal calibration maps φ(AoLP) and θ(DoLP,φ) to compensate for structured scene reflections for 3-D polarimetric imaging. This is accomplished using a microfacet scattering model to develop the functional form of a polarized bidirectional reflectance distribution function (BRDF) of the object surface. The ambient radiance is ray traced to the BRDF to create the calibration maps φ(AoLP) and θ(DoLP,φ), which may be combined into a single calibration map θ(DoLP, AoLP). These maps are applied to the AoLP and DoLP images to compute an array of surface normals, which are then mapped to form a 3-D image of the object.

公开(公告)号：EP3334997A1

公开(公告)日：2018-06-20

申请号：EP16840301.2

申请日：2016-08-09

Applicant: Raytheon Company

Inventor： FEST, Eric C.

IPC: F41G7/22 ,  G01S3/781 ,  F42B10/46

CPC classification number: G01J1/0429 ,  B64C1/1484 ,  F41G7/2253 ,  F41G7/2293 ,  F42B10/46 ,  F42B15/08 ,  F42B15/34 ,  G01S3/781

Abstract: In flight vehicles subject to extreme aero-thermal heating of the optical window, the optical system is configured to look through an off-axis segment of the optical window and a polarizer is positioned in the optical path between the off-axis segment and the detector. The polarizer comprises at least one filter pixel that imparts a linear polarization of a certain angular value to filter the incident radiation as a function of its polarization. In the case of a sheet polarizer, the entire polarizer is aligned to the plane of incidence. The sheet polarizer preferentially filters the target radiation to increase the SNR at the detector. In the case of a microgrid polarizer, at least one and preferably multiple filter pixels in each sub-array aligned to the plane of incidence. The microgrid polarizer can produce data products including a radiance image, an AoLP image and a DoLP image, only the AoLP image removes the self-emitted window radiance and an gradient caused by non-uniform aero-thermal heating.

公开(公告)号：EP3371548B1

公开(公告)日：2019-08-21

申请号：EP16785662.4

申请日：2016-10-13

Applicant: Raytheon Company

Inventor： FEST, Eric C.

IPC: G01B11/24 ,  G01J4/04 ,  G06T7/60 ,  G06T15/20 ,  G06T15/50 ,  G06T17/00 ,  G06T7/70

公开(公告)号：EP3341692A1

公开(公告)日：2018-07-04

申请号：EP16732432.6

申请日：2016-06-12

Applicant: Raytheon Company

Inventor： FEST, Eric C. ,  LEIGH, Jon E.

IPC: G01J4/04 ,  G01N21/21 ,  G02B5/30

CPC classification number: G02B27/286 ,  G01J4/04 ,  G02B5/201 ,  G02B5/3025 ,  G06T7/344 ,  G06T2207/10048

Abstract: Polarized pixelated filter sub-array is reconfigured to reduce sensitivity to misalignment. The condition number increases more slowly than the standard polarized pixelated filter sub-array as the misalignment increases. In different embodiments, the filter sub-array is configured such that the condition number has a finite bound at ½ pixel misalignment. The angular values of the polarizer filter array are determined to minimize the sensitivity of the condition number of the data reduction matrix to misalignment. This can be achieved by selecting angular values that minimize the expected value of the condition number E(CN) over the range of misalignment.